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NCT02421939 · OUTCOME

Percentage of Participants With Complete Remission (CR) With Partial Hematological Recovery (CRh)

A Study of ASP2215 Versus Salvage Chemotherapy in Patients With Relapsed or Refractory Acute Myeloid Leukemia (AML) With FMS-like Tyrosine Kinase (FLT3) Mutation · Source last updated 2025-12-04

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
Percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
From the date of randomization up to at least 6 months

What was measured

CRh rate was defined as the number of participants who achieved CRh at any of the postbaseline visits and did not have a best response of CR divided by the number of participants in the analysis population. CR: For participants to be classified as being in CR at a post-baseline visit, they must have had bone marrow regenerating normal hematopoietic cells and achieved a morphologic leukemia-free state and must had an ANC ≥ 1 x 10\^9/L and platelet count ≥ 100 x 10\^9/L and normal marrow differential with \< 5% blasts, and they were RBC and platelet transfusion independent (defined as 1 week without RBC transfusion and 1 week without platelet transfusion). There was no evidence of extramedullary leukemia. CRh: At a post baseline visit, participantss were classified as CRh if they had marrow blasts \< 5%, partial hematologic recovery ANC ≥ 0.5 x 10\^9/L and platelets ≥ 50 x 10\^9/L, no evidence of extramedullary leukemia and could not be classified as CR.

Analysis population: The analysis population was the ITT.

Groups in this outcome

Gilteritinib

Participants received 120 mg dose (3 tablets of 40 mg) orally once a day in continuous 28-day cycles, at least 2 hours after or 1 hour before food. Gilteritinib treatment continued until participants met one of the treatment discontinuation criteria. After the end of treatment period, participants were allowed to enter long-term follow up period for up to 3 years for collection of subsequent AML treatment, EuroQol Group-5 Dimension-5 Level Instrument (EQ-5D-5L), remission status and survival (cause of death and date of death). Participants continuing to derive clinical benefit from gilteritinib as assessed by the investigator were allowed to continue the study treatment until a discontinuation criterion was met or if they had completed more than 3 years of treatment.

Salvage Chemotherapy

Participants received chemotherapy in 28-day cycles. Participants on Low-Dose Cytarabine (LoDAC) received 20 mg of cytarabine twice daily by subcutaneous (SC) or intravenous (IV) injection for 10 days. Participants on azacitidine received 75 mg/m\^2 daily by SC or IV injection for 7 days. Participants on LoDAC or azacitidine treatment continued until they met discontinuation criteria. Participants on mitoxantrone, etoposide and intermediate-dose cytarabine (MEC) chemotherapy received mitoxantrone 8 mg/m\^2 daily by IV for 5 days, etoposide 100 mg/m\^2 daily by IV for 5 days and cytarabine 1000 mg/m\^2 daily by IV for 5 days (days 1-5). Participants on fludarabine, cytarabine and granulocyte colony-stimulating factor with idarubicin (FLAG-IDA) chemotherapy received granulocyte-colony stimulating factor (G-CSF) 300 μg/m\^2 daily by SC/IV for 5 days (days 1-5), fludarabine 30 mg/m\^2 daily by IV for 5 days (days 2-6), cytarabine 2000 mg/m\^2 daily by IV for 5 days (days 2-6) and idarubicin 10 mg/m\^2 daily by IV for 3 days (days 2-4). Participants receiving MEC or FLAG-IDA received 1 cycle of therapy and were assessed for response on or after day 15. After the end of treatment period, participants were allowed to enter the long-term follow-up period of up to 3 years for collection of subsequent AML treatment, EQ-5D-5L, remission status and survival (cause of death and date of death).

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Gilteritinib247
Salvage Chemotherapy124

Reported measurements

Source class 1
Values in Percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Gilteritinib34.0Not reported28.140.3Not reported
Salvage Chemotherapy15.3Not reported9.522.9Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    9.8
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    27.4
    group Description
    Based on a stratified Cochran-Mantel-Haenszel test. Stratification factors were response to first-line AML therapy and preselected salvage chemotherapy per IRT. Pooled strata were used as shown in Table 12.3.3.2. Treatment differences were adjusted based on pooled strata. Treatment difference = gilteritinib 120 mg - chemotherapy.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0171
    p Value Comment
    Stratified 1-sided P-value.
    param Type
    Adjusted Treatment Difference,
    param Value
    18.6
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    9.8
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    27.4
    group Description
    Based on a stratified Cochran-Mantel-Haenszel test. Stratification factors were response to first-line AML therapy and preselected salvage chemotherapy per IRT. Pooled strata were used as shown in Table 12.3.3.2. Treatment differences were adjusted based on pooled strata. Treatment difference = gilteritinib 120 mg - chemotherapy.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    <0.0171
    p Value Comment
    Stratified 1-sided P-value.
    param Type
    Adjusted Treatment Difference,
    param Value
    18.6
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        28.1
        upper Limit
        40.3
        value
        34.0
      2. group Id
        OG001
        lower Limit
        9.5
        upper Limit
        22.9
        value
        15.3
denoms
  1. counts
    1. group Id
      OG000
      value
      247
    2. group Id
      OG001
      value
      124
    units
    Participants
description
CRh rate was defined as the number of participants who achieved CRh at any of the postbaseline visits and did not have a best response of CR divided by the number of participants in the analysis population. CR: For participants to be classified as being in CR at a post-baseline visit, they must have had bone marrow regenerating normal hematopoietic cells and achieved a morphologic leukemia-free state and must had an ANC ≥ 1 x 10\^9/L and platelet count ≥ 100 x 10\^9/L and normal marrow differential with \< 5% blasts, and they were RBC and platelet transfusion independent (defined as 1 week without RBC transfusion and 1 week without platelet transfusion). There was no evidence of extramedullary leukemia. CRh: At a post baseline visit, participantss were classified as CRh if they had marrow blasts \< 5%, partial hematologic recovery ANC ≥ 0.5 x 10\^9/L and platelets ≥ 50 x 10\^9/L, no evidence of extramedullary leukemia and could not be classified as CR.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received 120 mg dose (3 tablets of 40 mg) orally once a day in continuous 28-day cycles, at least 2 hours after or 1 hour before food. Gilteritinib treatment continued until participants met one of the treatment discontinuation criteria. After the end of treatment period, participants were allowed to enter long-term follow up period for up to 3 years for collection of subsequent AML treatment, EuroQol Group-5 Dimension-5 Level Instrument (EQ-5D-5L), remission status and survival (cause of death and date of death). Participants continuing to derive clinical benefit from gilteritinib as assessed by the investigator were allowed to continue the study treatment until a discontinuation criterion was met or if they had completed more than 3 years of treatment.
    id
    OG000
    title
    Gilteritinib
  2. description
    Participants received chemotherapy in 28-day cycles. Participants on Low-Dose Cytarabine (LoDAC) received 20 mg of cytarabine twice daily by subcutaneous (SC) or intravenous (IV) injection for 10 days. Participants on azacitidine received 75 mg/m\^2 daily by SC or IV injection for 7 days. Participants on LoDAC or azacitidine treatment continued until they met discontinuation criteria. Participants on mitoxantrone, etoposide and intermediate-dose cytarabine (MEC) chemotherapy received mitoxantrone 8 mg/m\^2 daily by IV for 5 days, etoposide 100 mg/m\^2 daily by IV for 5 days and cytarabine 1000 mg/m\^2 daily by IV for 5 days (days 1-5). Participants on fludarabine, cytarabine and granulocyte colony-stimulating factor with idarubicin (FLAG-IDA) chemotherapy received granulocyte-colony stimulating factor (G-CSF) 300 μg/m\^2 daily by SC/IV for 5 days (days 1-5), fludarabine 30 mg/m\^2 daily by IV for 5 days (days 2-6), cytarabine 2000 mg/m\^2 daily by IV for 5 days (days 2-6) and idarubicin 10 mg/m\^2 daily by IV for 3 days (days 2-4). Participants receiving MEC or FLAG-IDA received 1 cycle of therapy and were assessed for response on or after day 15. After the end of treatment period, participants were allowed to enter the long-term follow-up period of up to 3 years for collection of subsequent AML treatment, EQ-5D-5L, remission status and survival (cause of death and date of death).
    id
    OG001
    title
    Salvage Chemotherapy
param Type
NUMBER
population Description
The analysis population was the ITT.
reporting Status
POSTED
time Frame
From the date of randomization up to at least 6 months
title
Percentage of Participants With Complete Remission (CR) With Partial Hematological Recovery (CRh)
type
SECONDARY
unit Of Measure
Percentage of participants

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice